Side milling processing method of resembled ruled surface integral wheel curved surfaces

A technology of integral impeller and processing method, which is applied in the direction of metal processing equipment, milling machine equipment, manufacturing tools, etc., can solve the problem that the side milling processing method is only applicable, and achieve the effect of simple implementation, high calculation efficiency, and expanded application range

Active Publication Date: 2012-11-28
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a side milling method for the curved surface of an integral impeller with a ruled surface, which can effectively solve the problem that the current side milling method is only applicable to the ruled surface blade, greatly Increased suitability for existing side milling operations

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  • Side milling processing method of resembled ruled surface integral wheel curved surfaces
  • Side milling processing method of resembled ruled surface integral wheel curved surfaces
  • Side milling processing method of resembled ruled surface integral wheel curved surfaces

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] see figure 1 , a side milling method for a ruled-like integral impeller surface, comprising the following steps:

[0040] (1) According to the ruled surface overall impeller surface, the approximate ruled surface is obtained based on the principle of least squares, and the approximate ruled surface is represented by two boundary cubic B-spline curves.

[0041] The quasi-ruled surface can be a three-dimensional surface model or a surface point cloud data file, and two boundary cubic B-spline curves approach the discrete point cloud of the quasi-ruled surface in the sense of least squares.

[0042] (2) According to the obtained approximate ruled surface and the given tool parameters, the discrete tool position and attitude are obtained by the offset method, and the initial tool path is obtained by B-spline curve interpolation.

[0043] Tool parameters are the ...

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Abstract

The invention relates to a side milling processing method of resembled ruled surface integral wheel curved surfaces. The method comprises the following steps that: firstly, similar ruled surfaces is acquired according to the resembled ruled surface integral wheel curved surfaces, and a resembled ruled surface is expressed by adopting two border triple B splines; then position and gesture of dispersed cutters are acquired through a polarization and according to approximate ruled surfaces and cutter parameters, and an initial cutter path is obtained through B spline interpolation; then the distance between the resembled ruled surface and a cutter enveloping surface is calculated, a cuter path integral optimization model following error evaluation criterions is established, the maximum optimized geometrical error is compared with a predetermined processing accuracy, and whether the resembled ruled surface meets processing accuracy requirements after being performed with side milling is judged; and at last, if the maximum optimized geometrical error is smaller than the predetermined processing accuracy, an optimal cutter path is generated, and a cutter path document is output. The side milling processing method of resembled ruled surface integral wheel curved surfaces overcomes the problem that the existing side milling processing method is only suitable for ruled surface blades, and expands application range of side milling process.

Description

technical field [0001] The invention relates to a side milling processing method, in particular to a side milling processing method for a curved surface of an integral impeller with a ruled grain surface. Background technique [0002] Five-axis side milling refers to the removal of material by side edge milling of the tool. Compared with the point contact processing method of ball end milling, side milling is a line contact processing method, and the processing bandwidth is significantly increased, which can improve the material removal rate and can Reduce tool wear. In addition, side milling also has the following advantages: Since the axis of the tool is basically parallel to the curved surface of the blade during side milling, the interference between the tool and the adjacent blade can be avoided to the greatest extent; Surface Quality. Side milling is well suited for the semi-finishing and finishing of integral impeller blade surfaces and is recommended for efficient ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00
Inventor 毕庆贞朱利民王宇晗丁汉
Owner SHANGHAI JIAO TONG UNIV
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